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AQA Additional Science B2.1 Cells and Cell Structure Flashcards
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- 1B2.1 Cells and Cell StructureAQA Additional Science
- 2What is the function of the nucleus in both animal and plant cells ?contains genetic material & tocontrol activities of the cell
- 3Where do chemical processes take place ?in the cytoplasm chemical processes which are controlled by enzymes
- 4What is the function of the cell membrane ?to control the movement of substances into and out of the cell
- 5What is the function of mitochondria in animal & plant cells ?to release energy in respiration
- 6Where does protein synthesis happen in both animal & plant cells ?in the ribosomes
- 7What do both plant and algal cells have ?a cell wall made of cellulose which strengthens the cells
- 8What do plant cells have ?chloroplast -to absorb light energy 4 photosynthesis also contains chlorophyll
a permanent vacuole with a cell sap to keep the cell turgid - 9What does a bacterial cell consist of ?a cytoplasm & a membrane surrounded by a cell wall the genes are in the cytoplasm not in the nucleus
- 10What are the features of yeast ?single celled have a nucleus & a membrane surrounded by a cell wall
- 11What is the function & adaptation of cells ?F : absorb light energy 4 photosynthesis
A: full of chloroplast , Regular shaped cells are closely packed in a continuous layer for efficient absorption of sunlight - 12What is the function of root hair cell ?to absorb water & mineral ions from the soil
- 13How is the Root cell adapted ?Long 'finger-like' process with very thin wall, which gives a large surface area.
- 14What is the function of a sperm cell ?to fertilise an egg cell
- 15How is a sperm cell adapted ?head contains genetic info
enzyme 2 penetrate the egg cell membrane
middle full of mitochondria 4 energy
tail moves sperm to egg - 16What is the function of Red Blood Cell ?contains haemoglobin to carry oxygen to the cells
- 17How is a Red Blood Cell Adapted ?thin outer membrane allows oxygen to diffuse easily
shape increases SA so oxygen is absorbed efficiently
no nucleus so full cell is haemoglobin
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- AQA Additional Science B2.1 Cells and Cell Structure Flashcards
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- Ilyass Jalloh
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